Panasonic WH-SXC09D3E5, Service Manual

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12.5. Force Heater Mode Operation
The backup heater also serves as backup in case of malfunctioning of the outdoor unit.
1. Make sure the OFF/ON control panel LED is OFF (no operation).
2. Press the Force button to start the force heater mode operation.
3. During force heater mode, all other operations are not allowed.
4. Press OFF/ON button to stop the force heater mode operation.
12.6. Indoor Unit Safety
12.6.1. Indoor Unit Safety Control
1. When water pump is ON, the system will start checking flow switch status (ON/OFF).
2. If the flow switch ON for 10 seconds, the system will check on the water inlet temperature for 10 seconds.
If the water inlet temperature not exceeds 80 C, the water pump shall be continuously running with normal mode.
If the water inlet temperature exceeds 80 C for continuously 10 seconds, the water pump will be OFF immediately.
3. After water pump OFF for more than 10 minutes, it will be ON back and the indoor unit safety control checking is restarted.
12.7. Auto Restart Control
1. When the power supply is cut off during the operation of Air-to-Water Heatpump, the compressor will re-operate after power
supply resumes.